Maisie Williams, the actor known for playing one of Game of Thrones’ several angry orphans Arya Stark, recently wrapped production on The Falling, a movie about sexual education at an all-girls school in the 1960s. In the film, her character loses her virginity. According to her, it was awkward.

It was extremely awkward! But [co-star] Joe [Cole] was very sensitive to the fact that I had never done a scene like this before, and it was great to work with someone who was so considerate of that. We went out for a couple of lunches and stuff just to get to know each other, and we had days of rehearsal where we’d get to know our characters and spend a couple of hours with each other. So I knew him quite well, and we got along quite well. It all paid off in the end.

She said she also served as a kind of mentor for younger girls on the set, since she was by far the most experienced actor of the group.

“I didn’t want to boast or anything, but it can be scary if you’re not exposed to [film sets],” she said. “People are talking to you and you have no idea what they’re speaking about, or what they mean. It was important to make sure they all felt comfortable, so I answered their questions as much as I could.”